Homework Help: Physics newton

Posted by harry on Sunday, November 5, 2006 at 4:04pm.

A rocket weighs 1 x10^7 N while on the surface of the earth. The ignition of its engines results in a lift off force of 1.5 X 10^7 N

a) what is the mass of the rocket.
b) what is its acceleration at lift -off
c)How fast will it be moving if it acceleartion at this rates for 10 minutes.
d) How high will it be after 10 minutes.

1 the weight is mg, solve for m
2 Lift off force=mg + ma solve for a
vf=at change t to seconds
h=1/2 a t^2
The reality is that the weight of the rocket decreases as fuel is burned. I suppose your teacher wants to ignore that.

Thank you Mr Bob Pursley

No one has answered this question yet.

Answer this Question

Related Questions

physics - During a lift off , the thrust a rocket produces must overcome the ...
physics - (ignore the other question i posted this is the right one) A rocket ...
physics - A rocket has a per-ignition mass of 1100kgs-1 producing a thrust of ...
physics - A 1000m3 rocket weighing 2.0x10^3 kg is going to be launched into ...
physics - The engines of a 1.20 x 10^5 N rocket exert an upward thrust of 2.00 x...
physics - A rocket weighs 2.0 X 107 N. Its engines exert a force of 2.5 X 107 N ...
Physics - A rocket starts from rest and moves upward from the surface of the ...
physics - A model rocket is launched straight upward with an initial speed of ...
physics - A model rocket is launched straight upward with an initial speed of 30...
physics - A model rocket is launched straight upward with an initial speed of 30...

For Further Reading

First Name:
School Subject:
Answer: